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mdf

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  Reply # 1673819 18-Nov-2016 19:50
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I've listened again and it is definitely weird. 

 

The fact you feel a vibration points to something going on in the subfloor. While it's very possible for sound to transfer along pipes, I'd be surprised if a (quiet) noise would also produce a vibration in the floor over any distance. Also pointing to the subfloor is that you can't hear it from outside. The fact it's not metallic or sharp would tend to point away from pipes banging. I might have guessed some kind of water hammer going on, but the noise is independent of running water.

 

What sort of insulation do you have (if any) in the subfloor? Expol makes a hollow that might account for changing the noise to the sort of harmonic sound? But totally guessing here.

 

In terms of who you would get to investigate further, I would start with a builder. Plumbers (and plumber rates) would only be relevant if pipes were involved.




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  Reply # 1673862 18-Nov-2016 20:49
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I have polyester sheets, basically a semi-rigid that stays up under the floor using friction.

 

Maybe a handyman...





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mdf

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  Reply # 1673866 18-Nov-2016 20:55
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timmmay:

 

I have polyester sheets, basically a semi-rigid that stays up under the floor using friction.

 

Maybe a handyman...

 

 

Any chance they're flexing? 




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  Reply # 1673881 18-Nov-2016 21:42
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mdf:

 

timmmay:

 

I have polyester sheets, basically a semi-rigid that stays up under the floor using friction.

 

 

Any chance they're flexing? 

 

 

They're cloth. Hit them with a hammer and you'd hear nothing. Hit concrete with them in front of the concrete and you'd hear a padded thud noise. Good idea but not that.

 

I think it has to be either the wind blowing into a vent pipe or something actually moving. I couldn't see anything moving when I managed to get down there, so vents are worth looking at. I'll just have to get someone in.





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  Reply # 1674332 19-Nov-2016 21:53
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timmmay: ...either the wind blowing into a vent pipe ...
Can you temporarily plug the top of the vent pipe, basin/bath/shower drains/overflows etc to see if that affects the noise?


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  Reply # 1674335 19-Nov-2016 22:00
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Get a student in... free rent under the house until they find the noise. tongue-out




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  Reply # 1674342 19-Nov-2016 22:24
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lapimate:

 

timmmay: ...either the wind blowing into a vent pipe ...
Can you temporarily plug the top of the vent pipe, basin/bath/shower drains/overflows etc to see if that affects the noise?

 

 

I have one or two pipes sticking out the side of the house and two out the roof... not sure which is which.





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  Reply # 1674349 19-Nov-2016 23:36
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maybe a loose and crooked floor board?  Contraction and expansion in the heat causing the bang. 




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  Reply # 1674381 20-Nov-2016 08:41
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Goosey:

 

maybe a loose and crooked floor board?  Contraction and expansion in the heat causing the bang. 

 

 

Really doesn't sound like that, but thanks for the idea. It really sounds like something hitting something else, though that could be caused by solid, liquid, or gas.





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neb

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  Reply # 1674641 20-Nov-2016 19:48
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blakamin:

Get a student in... free rent under the house until they find the noise. tongue-out

 

 

Whatever you do though, don't go to a psychologist and complain about hearing an empty, hollow thud...

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  Reply # 1674776 21-Nov-2016 08:44
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Upload a video to YT because #1 it would be helpful in the diagnosis and #2 YT needs more random wtf videos haha




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  Reply # 1674778 21-Nov-2016 08:52
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BTR:

 

Upload a video to YT because #1 it would be helpful in the diagnosis and #2 YT needs more random wtf videos haha

 

 

I see no benefit to this, it's easy to hear on SoundCloud.





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  Reply # 1674826 21-Nov-2016 10:40
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Are you getting any weird smells coming from the toilet (other than your own Lol).

 

Kind of sounds like reverb from gas venting somewhere.  Any work on your sewer lately?

 

Have seen worn backflow valves let gas from sewer pipe wander and a toilet pan bubble before

 

 




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  Reply # 1674828 21-Nov-2016 10:46
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hsvhel:

 

Are you getting any weird smells coming from the toilet (other than your own Lol).

 

Kind of sounds like reverb from gas venting somewhere.  Any work on your sewer lately?

 

Have seen worn backflow valves let gas from sewer pipe wander and a toilet pan bubble before

 

 

Nope no smells. No recent sewer work that I'm aware of, and it's my house. Might first try a handyman under the house, if that fails then maybe a plumber.





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  Reply # 1674912 21-Nov-2016 12:05
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There are a lot of people here who really want to know what the source of that noise is. Don't keep it to yourself when you find out.

 

 





I reject your reality and substitute my own. - Adam Savage
 


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